Mechanical device



UNITnp STATES PATENT OFFICE..

FRANCIS KIMMEL GAFF, OF HAMILTON, OHIO.

MECHANICAL DEVICE.

SPECIFICATION forming part of Letters Patent NO. 626,604, dated J une 6,1899.

Application led October 17, 1898- Serial No. 693,785. (No model.)

To all whom it may concern,.-

Beit known that I, FRANCIS KIIIMEL GAFI, of Hamilton, in the county ofButlerand State of Ohio, have invented a new and Improved MechanicalDevice, of which the following is a full, clear, and exact description.

This invention relates t0 improvements in mechanical devices havingjaws; and the object is to provide an arm or jaw of simple andcomparatively inexpensive construction that may be quickly applied forthe holding of Work. a

I will describe a device applying my invention and then point out thenovel features `in the appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in Which similar characters of reference indicatecorresponding parts in both views.

Figure l is a perspective view of a device applying my invention, andFig. 2 is a section on the line f2 2 of Fig. l.

Referring to the drawings, 1 designates the bar carrying the combinationor invention, the bar being shown as rectangular in shape ofcross-section and having a series of teeth on its edges but obviously itmay be of other shape, such as round. Mounted upon the bar is a jaw 3,having an opening 4, through which the bar l passes freely, andextending from the rear end of the jaw is a lug 5 so curved, as at 6, asto receive an eccentric-lever head 7, which is pivoted in the yoke S.The yoke S engages loosely around the bar l and the movable jaw 3, andon its opposite sides it has shoulders 0, designed to engage the lugs 10upon the jaw 3.

In operation the eccentric-lever 7 is turned With the smallest radius incontact with the lug 5. The combination is free to move upon the bar l(the lugs l0 and the shoulders 9 preventing the yoke and jaw frombinding) until the jaw 3 is brought in close contact with any objectupon which its force is to be exerted. The eccentric-lever 7 is to berotated in the direction indicated by the dotted lines. This movementcauses the yoke to closely grip the bar, at the same time rocking thejaw Sin the yoke upon its lower cross-tie 8, causing pressure to beexerted by the jaw 3.

I have shown a resistance device in the form of an arm or jaw 13,extended rigidly from the bar; but it is to be understood that thisspecial form of resistance is not a necessary feature of my invention,as other forms may be employed.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. A mechanical device, comprising a bar, a jaw movableon the bar, a yoke engaging around the movable jaw and the bar, and aclamping-head eccentrically mounted in said yoke and engaging Withaprojection upon the movable jaw, substantially as specified.

2. A mechanical device, comprising a bar, a jaw movable on the bar, ayoke engaging around said bar and movable jaw and having shoulders, lugsextended from the movable jaw for engagement with said shoulders, aclamping-head eccentrically mounted in the yoke, and a projection fromthe movable jaW With which said clamping-head engages, substantially asspecified.

3. The combination with a bar, of a jaw mounted to slide and to rockthereon, a yoke engaging around the bar and jaw, and an eccentricpivoted to the yoke and engaging with a projection of the jaw,substantially as speciiied.

FRANCIS KIMMEL GAFF. lVitnesses:

ISRAEL WILLIAMS, W. C. MCKEMY.

